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drm/amdgpu/soc15: add need_reset_on_init asic callback for SOC15 (v2)

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SOC15 chips require a reset if the driver was previously loaded
because the PSP can only be loaded once between each reset.

v2: rebase, handle multiple asic funcs

Reviewed-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2018-11-01 00:00:57 -05:00
parent 762e6f3f20
commit 9281f12cab
1 changed files with 20 additions and 0 deletions
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20
drivers/gpu/drm/amd/amdgpu/soc15.c
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@ -46,6 +46,7 @@
#include "nbio/nbio_7_0_default.h"
#include "nbio/nbio_7_0_sh_mask.h"
#include "nbio/nbio_7_0_smn.h"
#include "mp/mp_9_0_offset.h"
#include "soc15.h"
#include "soc15_common.h"
@ -650,6 +651,23 @@ static void soc15_get_pcie_usage(struct amdgpu_device *adev, uint64_t *count0,
*count1 = RREG32_PCIE(smnPCIE_PERF_COUNT1_TXCLK) | (cnt1_of << 32);
}
static bool soc15_need_reset_on_init(struct amdgpu_device *adev)
{
u32 sol_reg;
if (adev->flags & AMD_IS_APU)
return false;
/* Check sOS sign of life register to confirm sys driver and sOS
* are already been loaded.
*/
sol_reg = RREG32_SOC15(MP0, 0, mmMP0_SMN_C2PMSG_81);
if (sol_reg)
return true;
return false;
}
static const struct amdgpu_asic_funcs soc15_asic_funcs =
{
.read_disabled_bios = &soc15_read_disabled_bios,
@ -666,6 +684,7 @@ static const struct amdgpu_asic_funcs soc15_asic_funcs =
.need_full_reset = &soc15_need_full_reset,
.init_doorbell_index = &vega10_doorbell_index_init,
.get_pcie_usage = &soc15_get_pcie_usage,
.need_reset_on_init = &soc15_need_reset_on_init,
};
static const struct amdgpu_asic_funcs vega20_asic_funcs =
@ -684,6 +703,7 @@ static const struct amdgpu_asic_funcs vega20_asic_funcs =
.need_full_reset = &soc15_need_full_reset,
.init_doorbell_index = &vega20_doorbell_index_init,
.get_pcie_usage = &soc15_get_pcie_usage,
.need_reset_on_init = &soc15_need_reset_on_init,
};
static int soc15_common_early_init(void *handle)